instructions for installation, use and...

INSTRUCTIONS FOR INSTALLATION, USE AND CARE OF WATER HEATERSSTANDARD MB 30, 50, 80 lit. STANDARD MB 80 H, PRAKTIK MB 50, 80, 100, 120 lit. PRAKTIK MB 50, 80, 100, 120 lit. InoxPRAKTIK MB PK 80,120 lit. PRAKTIK MB PK 80, 120 lit. InoxSLIM MB 30, 50, 80 lit. SLIM MB 30, 50, 80 lit. Inox

2

ENG

CONTENTS

Technical information......................................................................3Installation.......................................................................................4Connection to water supply...........................................................8Connection to power supply..........................................................9Use, control and maintenace of electrical water heaters.............10Waste disposal ..............................................................................11

3

ENG

TECHNICAL INFORMATION

Electrical accumulation water heaters are designed to work with pressure of the water supply pipeline. The appliance is not meant for persons (including children) of reduced psychophysical abilities, unless under supervision of persons responsable for their safety, i.e. for persons not skilled for use of the appliance. Improper use of the appliance, especially from the side of children, should be prevented. Water heaters are made according to valid standards and tested and certified by authorized laboratory. Product technical characteristics are given on the sticker „Table with Characteristics“ between connec-tion pipes.

Picture 1 shows design of the water heater with all parts

1. Housing2. Polyurethane insulation3 Heating tank (enamelled)4 Screw, seal, nut, washer5 Heater with seal6 Flange7 Flange sealing rubber8 Counter-flange9 Thermoregulator10 Mg-anode11 Connection tube for water12 Rings13 Connection tube for hot water output14 Signal lamp15 Thermoregulator button16 Thermometer17 Support for hanging to wall18 Screws for supportPicture 1

4

ENG

INSTALLATION

Only authorized persons are allowed to perform installation / con-nection of water heaters to water and power supplies. All types of water heaters are fixed to the wall by 2 or 4 screws of 8 mm minimum diameter. Thin and delicate walls should be reinforced prior to water heater installation

Technical characteristics of accumulation water heater:

ModelCapacity (litres)

Nominal pressure (Mpa)Weight when full of water (kg)Corrosion protection

typeHeater power (W)

Voltage Time of water heating

from 15°C to 75°C

Praktik MB 50 500.6

22/72Enamelled Mg anode

2000230

150

Praktik MB 80800.6


2000230

255

Praktik MB 100 Praktik MB 120100 1200.6 0.6

32/132 36/156Enamelled Mg anode

Enamelled Mg anode

2000 2000230 230

350 435

Model

Capacity (litres)Nominal pressure (Mpa)

Weight when full of water (kg)Corrosion protection



from 15°C to 75°C

Praktik MB50 INOX

500.6

18/68INOX

Mg anode2000230

150

Praktik MB80 INOX

800.6

22/102INOX

Mg anode2000230

255

Praktik MB100 INOX

Praktik MB120 INOX

100 1200.6 0.6

25/125 28/148INOX

Mg anodeINOX

Mg anode2000 2000230 230

350 435





from 15°C to 75°C

Standard MB 30 300.6

17/47Enamelled Mg

anode2000230

105

Standard MB 50500.6

22/72Enamelled Mg

anode2000230

155

Standard MB 80800.6

29/109Enamelled Mg

anode2000230

305

5

ENG

The tank is insulated with quality polyurethane insulation providing that water stays hot for long. Enamelled tanks are extra protected from corrosion by the magnesium anode. Water from enamelled and stainless steel tanks is physiologically pure and therefore usable also for food preparation.





from 15°C to 75°C

Slim MB 30 300.6


2000230

105

Slim MB 50500.6


2000230

155

Slim MB 80800.6


2000230

305





from 15°C to 75°C

Slim MB 30 INOX 300.6

12/42INOX

Mg anode2000230

105

Slim MB 50 INOX500.6

16/66INOX

Mg anode2000230

155

Slim MB 80 INOX800.6

23/103INOX

Mg anode2000230

305





from 15°C to 75°C

Standard MB 80 H 800.6

29/109EnamelledMg anode

2000230

320

6

ENG

Connection and installation measures:

Model

STANDARD MB 30

PRKTIK MB 50

PRKTIK MB 120

SLIM MB 80

STANDARD MB 50

PRKTIK MB 80

SLIM MB 30

MB STANDARD 80

PRKTIK MB 100

SLIM MB 50

A(mm) C(mm) E(mm) M(mm)

504

591

1091

1135

190

192

192

182

415 81

480 110

480 110

390 116

704

811

535

190

192

182

415 81

480 110

390 116

1004

951

785

190

192

182

415 81

480 110

390 116

B(mm) 0(mm) L(mm) N(mm)

293

384

884

953

395

454

454

354

100 130-360

100 130-360

600 130-360

730 240-300

493

604

303

395

454

354

300 130-360

320 130-360

130 240-300

793

744

603

395

454

354

600 130-360

460 130-360

380 240-300

Model PRAKTIK

Heating fluid max. pressure (MPa)

Heat exchanger connectors

Heat exchanger surface (m2)

Heating fluid max. temperature (°C)

Enameled water tank: MB PKL 80; MB PKD 80;

MB PKL 120; MB PKD 120;

Stainless steel water tank: MB PKL 80 RFI; MB PKD 80 FI;

MB PKL 120 FI; MB PKD 120 FI;

0.6

G¾" G½"

0.25 0.3

90

Picture 2

NNU

NNM

QUO

OOTIO

b

j

G½

" (G

¾")

7

ENG

Horisontal water heaters could be mounted as left or right depend-ing on the position of the thermoregulator, and this models are designed to be mounted only on wall (not ceiling ) , so pipes are toward floor.

STANDARD MB 80 H

A (mm) C (mm) E (mm)

1004 190 415

B (mm) 0 (mm) L (mm)

204 395 610

Left water heater MB 80 HL Right water heater MB 80 HD

WALLSIDE VIEW

8

ENG

CONNECTION TO WATER SUPPLY

Input of cold water for electrical water heater is marked with blue ring, while hot water output is marked with red ring, which is to be respected when connecting water heater to water supply. Accumula-tion heater works under preassure (closed system) and it is possible to use water at more than one point in the house.The fittigns/mixing pipes appropriate for work under pressure have to be used with this water heater.On each accumulation water heater there have to be mounted a safe-ty valve (see Picture 3) to keep pressure in the tank from exceeding the limit. Such safety valve should be checked every two weeks. By moving the lever or unscrewing the nut (depending on valve type) exceeding water from return safety valve should come out meaning the valve is working correctly. Non-return valve prevents tank to empty in case of pressure fall in water supply pipeline. If regular water pressure in the pipeline is higher than 0,6 Mpa (6 bar) a reduction valve has to be mounted on the cold water inlet connection.

An interlocking must not come between the safety valve and the wa-ter heater, as it would disable safety valve function.Fill the water heater with water before connecting it to electric power supply. During the filling operation open the hot water pipe. When water starts coming out the hot water pipe the water heater is full.If hot water is used on more than one spot in the house it is recomand-able to make internal pipeline as short as possible so that heat losses are minimum.

Picture 3

1 Safety valve2 Test valve3 Non-return valve4 Reduction valve5 Interlocking valveCW cold waterHW hot water

ENERGY SOURCE

HW CW

9

ENG

The water heaters with heat exchanger are connected to water supply in the same way like regular water heaters. Water heaters with heat exchanger are ment for connection to other energy sources (central-ized heating system, solar heating and heat punps). Entrance point of heated media to the heat exchanger is marked with red, while exit is marked with blue. Water heating with electrical heater and heat exchanger could function contemporary or separately.Water heaters with heat exchanger are not designed for central heat-ing systems which fluid temperature exceeds 110°C.Due water heating, water pressure in water heater increas up to safe-ty valve set limit, and water drops come out the valve. The dripcan be piped to the drain by installing a catching unit just below the safety valve.In case the existing plumbing does not enable you to pipe the dripping water from the return safety valve into the drain, you can avoid the dripping by installing a 3-litre expansion tank on the inlet water pipe of the boiler.Water may come out in drops from the exhaust pipe of pressure re-duction device i.e, safety valve, this pipe has to be open and posi-tioned downwise, to prevent freezing of the water in the pipe.By regular function of the safety valve it should be possible to re-move limescale sediment as well as to check if it is bloacked. Safety valve is delivered with the water heater and the sheme shows how to install it.At installation of a water heater and its connection to water supply, it is recomanded to use new set of hoses, old ones should not be used.

CONNECTION TO POVER SUPPLY

Electric accumulation water heater is connected to power supply by valid standards for electrical installations, with a plug cable 3x1,5 mm H05VV.Before connecting power supply cable, unscrew the two screws and remove protection cap of the electric water heater. The electric water heater is not delivered with a device to cut off the power from the supply permanently. A separating element of all the poles from the supply should be included, according to local installation rules. Such separating means have to be included in the electrical installation.

10

ENG

Connection scheme for water heaters of 30-120 litres.

WARNING: Before any intervention the water heater must be discon-nected from the power supply line.

USE, CONTROL, MAINTENANCE OF ELECTRIC WATER HEATERS After connecting it to water and power supplies the water heater is ready to use. For types without external heater regulation (no button on the cover), water temperature is regulated by a preset thermoreg-ulator. It is recomanded not to change the set temperature (t=55°C) being optimal for saving energy and minimum limestone sedimenta-tion.Should the user however want to change the temperature of water heating, the water heater should first be disconnected from power supply line, protection cap on the bottom should be taken off, and by turning plastic button directly on the thermoregulator, water heating temperature can be set to be lower or higher within the range 20 to 70±5°C.For water heater types with external regulation, by simple turning the button desired water heating temperature can be set within the range 20 to 70±5°C. When desired/ set temperature is reached inside the the tank the thermoregulator will cut the power circuit automati-cally, and the signal lamp which has been on during the heating time, will go off. WARNING: before using hot water from water heater turn it off from elecrical power supply

Picture 4

1. Thermoregulator2 Heater3 Connection clamp4 Signal lampL – phaseN neutralGround

11

ENG

Water heaters also have thermometers with metal cap and bimetal showing the temperature of the water.If water heater will not be used for longer period it is recomanded to disconnect it from power supply line. If water inside the water heater could freeze while not used it is recomanded to empty the tank.The miantenance tips should be respected, especially check-up for how much Mg anode is consumed, at least every 36 months, and re-place it if needed. The limestone sediment should be removed regu-larly. For such interventions tank must be emptied.

To empty the tank please proceed as follows:- Disconnect the water heater from power supply- Close the inlet cold water valve- Open the hot water pipe- Unscrew the safety valve mounted on the cold water inlet, and wait for water to go out. After that the unscrew the nut of the heater counterflange, take out the flange with the heater, remove the limescale and replace Mg-anode.If you use chemical products for limescale removal, they must not come into contact with Mg-anode (anode should be taken out). Af-terwards the tank should be rinsed and refilled with water.

WASTE DISPOSAL – WHAT AFTER YOUR WATER HEATER IS NO MORE USABLE

The accumulation water heaters and the packing are made of recyclable materials. After your water heat-er is not usable any more, it is forbidden to dispose it as non-selected waste. For waste disposal, the water heater plactic and rubber parts should be separated from metal parts, classified and left for recycling or final disposal according to loacal regulations.Only by waste separation and management you will pro-tect the environment.

Revision 24.11.2012.god.

Metalac BojlerLjubićska 1, 32300 Gornji Milanovac, SrbijaT. +381 32 717 432, 712 818 F. + 381 32 770 498E. [email protected] www.metalac.com

instructions for installation, use and...

Documents